Results 271 to 280 of about 481,349 (388)

Adaptive sampling for ecological monitoring using biased data: a stratum‐based approach

open access: yesOikos, EarlyView.
Indicators of biodiversity change across large extents of geographic, temporal and taxonomic space are frequent products of various types of ecological monitoring and other data collection efforts. Unfortunately, many such indicators are based on data that are highly unlikely to be representative of the intended statistical populations.
Oliver L. Pescott   +2 more
wiley   +1 more source

Changes in land cover drove the recent range expansion of a tropical farmland bird

open access: yesOikos, EarlyView.
Several bird species associated with agricultural landscapes in the Palearctic and in the Nearctic (i.e. farmland birds) have been experiencing severe population declines since the 1970s, mainly due to habitat loss driven by agricultural intensification.
Luana Jéssica Ferreira   +4 more
wiley   +1 more source

Effects of herbivores on grassland plant diversity.

open access: yesTrends in Ecology & Evolution, 1998
H. Olff, M. Ritchie
semanticscholar   +1 more source

Prey and prejudice: predation by the European bee‐eater Merops apiaster has species‐specific effects on the ecology and genetics of bumblebees

open access: yesOikos, EarlyView.
Predation is a major ecological force, but its effect on bees has rarely been studied. Here, we investigated whether the presence of the European bee‐eater Merops apiaster, a migratory bird species and major bee predator, decreases the abundance and body size of three common bumblebee species (Bombus lapidarius, B. terrestris and B.
Belinda Kahnt   +5 more
wiley   +1 more source

Three decades of experimental nitrogen fertilization increases the frequency of a defensive plant morph

open access: yesOikos, EarlyView.
Resources, such as nitrogen, are widely hypothesized to underlie the expression and evolution of plant defenses to herbivory. However, resource availability can affect selection on plant defense traits in contrasting ways: resource availability can 1) weaken selection on defense traits by reducing the costs of herbivory, or 2) strengthen selection on ...
Mia M. Howard   +3 more
wiley   +1 more source

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